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Diana, number 14, panned side-on at speed, her door number and partner livery sharp against streaked green hills

Meet
Diana.

A Jochen Hahn-built MAN TGX. Champion in 2022, ours since the end of that year, and at the sharp end of Division 1 every season since.

The truckNo. 14 since 2023

Hahn-built.
Bowler-run.

Diana was built by Jochen Hahn and won the 2022 championship before she came to us. We have raced her as number 14 since 2023.

Every season since, she has been rebuilt, re-cored and re-set in our own workshop — and every season since, she has finished in the top five.

Diana is for sale

Offered complete, less engine, gearbox and radio comms, with spares and support from the team who race her.

See the sale listing
John Bowler smiling at the camera as he climbs into Diana’s cab under the red team awning
Thruxton 2026Photo: Aaron Photography
Walk aroundInteractive 3D model

Every angle
of number 14.

Drag to turn her round. Click, then scroll or pinch to get in close.

Interactive 3D model of Diana, the Bowler Racing number 14 MAN truck

Drag to rotate the truck. Select the model first, then use the mouse wheel, pinch, or the zoom buttons to zoom. Keyboard users can focus the model and use the arrow keys.

Diana / No. 14

3D model: Race Truck (MAN) (opens in a new tab) by LuizZed36, licensed under CC BY 4.0 (opens in a new tab); modified for Bowler Racing.

Truck
MAN TGX
Year
2014
Built by
Jochen Hahn
Class
Division 1
Under the skinBrakes · Dampers · Data
Diana, number 14, cornering so hard her inside front wheel lifts off the track
Inside front wheel up, mid-corner

Heavyweight.
Precise.

Five tonnes at 160 km/h needs more than horsepower. The brakes, the damping and the data are where the lap time lives.

Full technical specification
  • Stops like nothing else

    Fully water-cooled brakes fed from 200 litres on board, with brake temperature and pressure sensed at every corner.

  • Two-way adjustable, all round

    Racetivity dampers front and rear on Hahn and Unit 8 springs — the set-up run in the British, FIA, French and Dutch championships.

  • Every channel logged

    Full AIM data logging, CAN control of every truck function and an 11-inch dash so the driver sees what the engineers see.

Diana, number 14, seen from behind on her own against dark pine trees and a grey sky
Donington 2026Photo: Aaron Photography

Diana’s record

From champion
to number 14.

Read our story
Championship won
2022
Before we bought her
Our first season
2023
Owned since late 2022
Seasons with us
4
No expense spared

Source: Bowler Racing

Low three-quarter view of Diana’s cab under the awning showing her partner decals
The livery, up close

The partners behind No. 14

The names
she carries.

Her navy, red and white livery carries the partners who put her on the grid.

Next chapter

Race calendar

Next: Brands Hatch Indy · 30 Oct–1 Nov